package com.heima.article.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.heima.article.entity.ApAuthor;
import com.heima.article.mapper.ApAuthorMapper;
import com.heima.article.service.IApAuthorService;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.heima.common.dto.ResponseResult;
import org.springframework.stereotype.Service;

import java.util.Date;

/**
 * <p>
 * APP文章作者信息表 服务实现类
 * </p>
 *
 * @author syl
 * @since 2022-06-27
 */
@Service
public class ApAuthorServiceImpl extends ServiceImpl<ApAuthorMapper, ApAuthor> implements IApAuthorService {

    @Override
    public ResponseResult<ApAuthor> saveApAuthor(ApAuthor entity) {
        // 判断作者是否存在
        // 根据 user_id 查询
        LambdaQueryWrapper<ApAuthor> query = new LambdaQueryWrapper<>();
        query.eq(ApAuthor::getUserId, entity.getUserId());
        ApAuthor one = this.getOne(query);
        // 如果存在,直接返回
        if (one != null) {
            return ResponseResult.okResult(one);
        }
        // 设置时间
        entity.setCreatedTime(new Date());
        // 否则,新增作者,然后返回
        this.save(entity);
        return ResponseResult.okResult(entity);
    }
}
